Method get

reflection/pets/Creator.java:16–27

()

  // The different types of Pet to create:
  public abstract List<Class<? extends Pet>> types();
  @Override public Pet get() { // Create one random Pet
    int n = rand.nextInt(types().size());
    try {
      return types().get(n)
        .getConstructor().newInstance();
    } catch(InstantiationException |
            NoSuchMethodException |
            InvocationTargetException |
            IllegalAccessException e) {
      throw new RuntimeException(e);
    }
  }
  public Stream<Pet> stream() {
    return Stream.generate(this);
  }